Updated mediawiki/extensions
Project: mediawiki/extensions/Spark  63b148c011d04a27d513b9bae109a1793bd228ce

Migrate to JSON i18n

Procedure per https://www.mediawiki.org/wiki/Manual:GenerateJsonI18n.php
with shim.

Change-Id: Ie45e43181258db8340f50f112855fdc8b56a9d7f